For one of the projects I need sketch of the background image with a tasty bottle of whiskey.
I did not have enough time for a good modelling and render, so I decided to make it in Photoshop
First we need a rough model, it will helps to understand form, and do not make a mistake in perspective. After 15 minutes in the 3D editor we get the following picture:
First we need to draw splashes:
The next step - the analysis of reference. Do not underestimate this step. Look at the references, study them, and try to repeat.
Explore how light refract into liquid, look at the reflections and shadow.
It only looks complicated, but when you start it, you will understand that it is very simple.
Now we will use our first image and blend it with screen mode.
Near corner of the bottles we do not need (this is the background image and there will be positioned site content), so let's delete it and make some refractions, don't forgot to look at references.
Color corrections and lens blur: